Features:
Compact， range DC 0-100V， require additional auxiliary power
Wide Auxiliary supply voltage range， up to 3.3-30V， need no regulator
Reverse polarity protection，power lines will not burn when reversed
Equipped with three wiring， easy access to car / electric car / motorcycle test line
Red: Header supply - positive， the maximum can not exceed 30V
Black line: common ground， table header powered - negative， test terminal - negative
yellow line: Header Test input
Can be used for various voltage applications

Specifications:
Operating voltage: 3.3~30V (with reverse polarity protection)
Test voltage: 0~99.9V
Operating Current: <20mA
Display: 0.36 inch LED  red  blue (color optional)
Screw Hole Size: 2mm
Measurement rate: ≥ 500mS / times
Extreme working conditions:
Minimum operating voltage: +3.3 V
Maximum working voltage: +30 V
Operating Temperature: -10~+65
Operating Humidity: 10~80% (non-condensing)
Working pressure: 80~106kPa
sun exposure: no direct exposure
Dimension:2.8 x 2 x 1.5cm(L x W x H)
Cable length:Approx.13cm
Net weight:7g
Package weight:17g

Package include:
1 x three-wire DC digital voltmeter